Dam per-regulator



(No Model.)

F. LEGLERE.

DAMPER REGULATOR. No. 373,834. Patented Nov. 29, 1887.

Witnesses I I I [72 van/i07 i iiiZi a which support the diaphragm will from time with a damper-regulator for which I filed an -which the up and down play of the lever C PATENT OFFICE.

FRANCIS LECLERE, OF PHILADELPHIA, PENNSYLVANIA.

DAM PER-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 373.834, dated November 29, 1887.

Application filed May 2, 1887.. Serial No.236,36. (No model.)

To all whoi'n it may concern.-

Be it known that I, FRANCIS LEOLERE, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and-useful Improvements in Damper- Regulators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. v

My invention relates to damper-regulators, in which a weighted diaphragm is used for operating a valve of a dampermotor; and it consists of a novel construction of a diaphragm employed in such regulators, the purpose of which is to avoid friction and enhance the sensit-iveness of the regulator and to insure more than ordinary durability.

The accompanying drawing represents a damper-regulator, shown partly in elevation and partly in section, and illustrating my invention.

I have shown my invention in connection application for a patent on the 18th day of March, 1887, and to which my present invention is especially applicable, as will be shown.

The letter A in the-drawing represents a steam=vessel closed at the bottom and open on top, steam being supplied thereto by a pipe, a, from the boiler. The top of the vessel Ais closed'by a flexible diaphragm, a, of sheet metal, secured in position 'by means of a flanged ring, a and screw-bolts, (the latter not shown.) Upon said diaphragm rests a weighted cap, 13, weighted down by means of a lever, C, and connected with it by means of a knife-edge prop, b. The knife-edge fulcrum c of the diaphragmlever O is suitably hung in a housing, A, and the lever itself is guided about midway of its length in a slotted stand, D, and isl'provided with a balancing-weight,- d. Two set-screws, d d*, are provided on suitable projections of the stand D, between is regulated. ,Iir'order to prevent extreme downward strain upoln the diaphragm a by means of an extraordinary downw ard motion of the lever, I provided a central support, of, upon the bottom of the steamvessel A", upon.

to time rest, so as not to be unduly strained by the weight above. This support isimsensitive and reliable.

portant for the protection of the diaphragm, 5 5 which must be very lightand flexible, as the lvertical range can only be very slight owing to the liability of the metal plate being fractured. For this reason the'softer metals are preferable to steel, although a very thin and soft steel diaphragm destitute of elasticity may work equally well.

My experience with diaphragms of other material-such as india-rubber-not being as satisfactory as desired, I adopted metal and found the same satisfactory. The rolling or bending friction in rubber diaphragms prevents the indication of the more delicate vacillations of the steam-pressure, and such diaphragms frequently give way shortly after being put in actual service, although tested and approved before sale.

The damper-regulator is provided with a motor-valve, E, connected by link-rod 6 with the lever O, a water-supply pipe, F,- exhaust pipe F communicating pipe E, cylinder G, having a suitable piston, and a piston-rod, 9, chain 9, and damper H, all constructed and operating as described in my before-mentioned application. The pendulum-weight I and its connections h 9 described and claimed in said application, are used in connection with my improved diaphragm,whereby the damper regulator. is rendered very What I claim as my invention, and desire to secure by Letters Patent, is-

1. The metallic diaphragm a, in combination with the damper-regulating mechanism, constructed substantially as shown, interposed between it and the damper, substantially as and for the purpose described.

' 2. In a damper-regulator constructed and operating substantially as shown, the metallic diaphragm (t,'in combination with the central 5 support, a, substantially as and for the purpose described.

3. In combination with a motor-valve, E, link 6, lever O, prop b, cap B, and steam-vessel A, of the diaphragm a, substantially as and for the purpose described.

Inv testimony whereof I affix my signature in presence of two witnesses.

FRANCIS LEOLERE. 

